The Narrabri Stellar Intensity Interferometer was the first astronomical instrument to measure the diameters of a large number of stars at visible wavelengths. It was designed by Robert Hanbury Brown, who received the Hughes Medal in 1971 for this work. It was built at the Paul Wild Observatory in Australia by the University of Sydney. The design was based on an earlier optical intensity interferometer built by Hanbury Brown at Jodrell Bank in the UK. The Narrabri Stellar Intensity Interferometer has now been decomissioned.

There are now plans to build a new stellar intensity interferometer in the Northern Hemisphere.

External link

• Photograph of the Narrabri Stellar Intensity Interferometer with no copyright information

References

• The angular diameters of 32 stars, Mon. Not. R. Astron. Soc. Volume 167 pp 121-136 (1974)